Clinical observation of the anesthesia effects of bupivacaine in different concentration or the mixture of bupivacaine and lidocaine for a single epidural block in lumbar spinal canal operation是什么意思_Clinical observation of the anesthesia effects of bupivacaine in different concentration or the mixture of bupivacaine and lidocaine for a single epidural block in lumbar spinal canal operation在线翻译_英语_读音_用法_例句